Process for the separation of ethylidene diacetate from acetic a

Details Process for the separation of ethylidene diacetate from acetic a Process for the separation of ethylidene diacetate from acetic a

1993-04-05

1994-04-05

Manoharan, Virginia

Distillation: processes, separatory

Addition of material to distilland to inhibit or prevent...

203 34, 203 91, 203DIG21, 562891, 562898, B01D 334

Patent

active

053001982

ABSTRACT:
A distillation process for the separation of acetic anhydride from a mixture thereof with ethylidene diacetate wherein the mixture of acetic anhydride and ethylidene diacetate is fed to the mid section of a distillation column and a small amount of acetic acid is fed separately to the lower section of the column. The addition of the acetic acid suppresses tar formation during the distillation process.

REFERENCES:
patent: 4374070 (1983-02-01), Larkins et al.
patent: 4444624 (1984-04-01), Erpenbach et al.
patent: 4476238 (1984-10-01), Palmer et al.
patent: 4985383 (1991-01-01), Erpenbach et al.

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